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Testing the fuel pump power consumption > < Fuel pump delivery rate: Check

Leon Mk2

Voltage supply for the fuel pump: Check
Voltage supply for the fuel pump: Check
Check the tool and equipment equivalence table according to the applicability between Seat / VW / Audi / Skoda → Chapter
Special tools and workshop equipment required
   
t  Adapter -VAS 5565-, see equivalent → Anchor
  W00-10599
t  Manual multimeter -VAG 1526D-, see equivalent → Anchor
t  Ammeter clamp -VAG 1526B/2-
Test requirements
l  The fuses must be in good condition.
l  The voltage of the battery must be at least 12 V. If necessary, connect the battery charger.
l  All consumer electrics, for example: lights, heated rear window, should be off.
–  Remove rear seat → bodywork - interior fitting work; Rep. Gr.72.
–  Lift carpet under the seats and fold backwards.
–  Remove cover from fuel delivery unit.
–  switch ignition on. The fuel pump must be heard to run briefly, for approx. 2 seconds.
–  Switch off ignition.
If the fuel pump does not run:
–  Extract the terminal connector from the fuel delivery unit flange
–  Connect the measurement adapter/DSO -VAS 5565- between the connector and the flange.
  W00-10706
–  Connect the hand-held multimeter -V.A.G 1526D- to the contacts -1- and -5- of the adapter.
–  Connect the vehicle diagnostics tester -VAS 505X- and perform the guided function “Electrical fuel pump(s): perform” test.
  Note
The fuel pump now runs for approx. 30 seconds.
–  Read off the voltage value displayed on the hand-held multimeter -V.A.G 1526D-: Specification = Battery voltage
If no voltage is present:
–  Check the activation of the pump relay and the cables to see if there is a false contact or short circuit. → Vehicle diagnosis, testing and information system VAS 5051
Voltage supply OK.
–  Remove fuel delivery unit → Chapter.
–  Check if the cables between the flange and fuel pump are connected and that there is no interruption.
If there is cable integrity:
–  Replace fuel delivery unit.
  N20-10423

Testing the fuel pump power consumption > < Fuel pump delivery rate: Check